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Watertight hatch

a hatch and watertight technology, applied in the field of hatches, can solve the problems of failure of watertight seal, unsatisfactory options, and inability to achieve watertight seals, and achieve the effect of accurately sealing the hatch and effectively opening and closing the hatch

Active Publication Date: 2014-10-07
BILCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent ensures that the depth of penetration is within tolerances to prevent water leakage and material deformation. It also prepares the dimensions to prevent over-tightening and under-tightening, making it easy for operators to seal the hatch and open and close it using conventional tools.

Problems solved by technology

If the penetration force is too low, a watertight seal is not achieved.
If the penetration force is too high, the compressible material is permanently deformed causing a failure in the watertight seal.
However, it is desirable to minimize the tools carried by a worker and maximize worker efficiency and these options are not ideal.

Method used

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Examples

Experimental program
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Embodiment Construction

[0019]FIG. 1 is a top view of a hatch 10 having an upper surface that is flush with a surface 12, such as a sidewalk. The same hatch 10 may be installed flush with other surfaces, such as a roadway, town square, subway platform, or any other relatively flat surface used for pedestrian or vehicle transit. Typically the hatch 10 provides access to subsurface utilities such as power or signal lines. The hatch is formed from a suitable material such as aluminum, stainless steel or steel and may be coated to provide weatherproofing, by preventing damage from heat, sun, water, ice melting chemicals, and the like. The hatch 10 has a channel frame 14, typically formed from aluminum, circumscribing a cover plate 16. The cover plate 16 is attached to a hinge 18 at one end allowing it to swing open from the other end 19. To hold the hatch in place and to compress the gasket, a plurality of fasteners 20 are located around the perimeter of the cover plate 16. To enable easy opening and closing o...

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Abstract

A hatch useful for forming a portal to a sub-surface facility has a cover plate with a plurality of fasteners around its perimeter. These fasteners apply an adjustable compressive force on the cover plate. A compressible material is affixed to the cover plate inward from the perimeter adjacent to the fasteners. A first vertical portion of a rectangular channel has a first end penetrating the compressive material to form a water barrier with the penetration distance being determined by the compressive force. A mechanical stop determines a maximum penetration depth.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]N.A.U.S. GOVERNMENT RIGHTS[0002]N.A.BACKGROUND[0003]1. Field[0004]This invention relates to a hatch that provides access to a sub-surface facility, such a utility space. More particularly, the hatch includes a watertight seal that is precisely controlled to prevent leakage through the seal due to under-tightening and damage to the seal due to over-tightening.[0005]2. Description of the Related Art[0006]There are numerous hatches having a top surface flush with another surface, such as a sidewalk or roadway. These hatches provide access to an underlying sub-surface facility. The subsurface facilities frequently contain utility lines, such as power lines or communication lines. It is desirable to prevent the ingress of water, such as during a rainstorm or flood. In the manufacture of hatches, it is known to include a compressible material, such as a gasket, in the assembly to provide a watertight seal. The hatch may be sealed with a pluralit...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): E02D29/14E06B7/23
CPCE06B7/2301E02D29/1427E02D29/14E06B5/01
Inventor JOYCE, ROGER, F.
Owner BILCO
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